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Whose gonna win the race- soybean plants or aphids?

Show: 
Soybean Pest Podcast
Season: 
11
Episode: 
11
Description: 

Erin and Matt are back after a week off of podcasting to discuss a remarkable sitatution in Iowa. Soybean plants are developing faster than normal, 1-2 weeks ahead of schedule.  Aphid populations are increasing. Are the plants going to out grow the aphids? So what should a farmer do? Erin and Matt discuss the pros and cons of a foliar insecticide application.

Erin discusses some insects attacking the other crop grown in Iowa (hint: its corn). Corn earworms are causing injury due to the second summer migration.

Its a drought in the wester half of Iowa and the duo discuss how that may or may not be the cause of more frequent observations of spider mites.

Finally, Matt has a short FIT-ish question for Erin that she gets right! That's two in a row.

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Post-Derecho report, part 1 (also soybean aphid population are increaseing)

Show: 
Soybean Pest Podcast
Season: 
11
Episode: 
12
Description: 

It was a terrible, horrible, no good very bad week in central Iowa.  Erin and I give a summary of the Derecho's impact. We give a brief shout-out to ISU Extension, and Meaghan Anderson's summary of the damage to corn (https://mailchi.mp/4d564a6886f2/aixk6z6qw1-5248549?e=89e709107e). Consider joining Meaghan's newsletter: https://iastate.us10.list-manage.com/subscribe?u=08f91c67b14ea5bf5a26ba3...

We also talk about the recent increase in soybean aphid populations and the occurence of sub-populations that are resistant to pyrethroids. This may result in soybean aphids remaining in fields that were sprayed with insecticide.

No fun insect trivia this week. It was enough just to clear the yard, fields, etc and get the power back on.

 

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Post-Derecho report, part 2 (also a FIT)

Show: 
Soybean Pest Podcast
Season: 
11
Episode: 
13
Description: 

Erin reports back from a Extension meeting on the impact of the Derecho on agriculture in Iowa.  More details and help in recovering from the Derecho can be found here:

https://www.extension.iastate.edu/disasterrecovery/

Matt tries to get our minds off of the Derecho, drought and rising soybean aphid populations with a Fun (?) Insect Trivia question.

Stay safe.

Courage,
Matt

Category: 

We're Back! And we are hot and dry

Show: 
Soybean Pest Podcast
Season: 
12
Episode: 
1
Description: 

Season 12 of the soybean pest podcast starts off with a bang, a hot, dry bang.  The midwestern drought is affecting all of us, even the 6-legged.

Check the UNL drought monitor for the current status (hint, its bleak: https://droughtmonitor.unl.edu/CurrentMap/StateDroughtMonitor.aspx?IA)

We talk spider mites, cause its hot and dry.

Erin discusses the remarkable pests outbreaks occurring in alfalfa, exacerbated by a mild winter and hot, dry spring.

Matt turns our attention to Japanese beetles (JB), and the duo speculate about the impact weather has on their abundance. Erin notes a trend of JB larvae in the interior of cropfields, not just the edges. (https://crops.extension.iastate.edu/cropnews/2021/06/japanese-beetle-adu...)

Erin notes the first appearance of soybean gall midges in northeaster Iowa. Matt notes some progress in detecting insecticide resistant aphids.

Rootworms are also discussed as we note egg hatch, signaled with the appearance of lightening bugs.

Finally, Erin takes might to school with reports of the Hackberry emperor. Its a pretty butterfly, definitely not a thistle caterpillar and notorious for being a cheater (https://crops.extension.iastate.edu/blog/erin-hodgson/have-you-seen-chea...)

To wrap up- Erin gives updates on her live events and we note the 26 June is pollinator fest at Reiman gardens (https://www.reimangardens.com/event/pollinator-fest-7/)

Also, did we mention its hot and dry?

Stay tuned for weekly updates now that the field season is in full gear.

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It rained, and we still have insects in our crops

Show: 
Soybean Pest Podcast
Season: 
12
Episode: 
2
Description: 

Erin and Matt make it back for a second episode. There is a lot of soybean aphid talk in this episode, maybe, maybe too much talk. For a summary of some of that talk, check out this link (https://crops.extension.iastate.edu/blog/ashley-dean-erin-hodgson/first-...).

If you get through the first 15 minutes and are still awake there is another 12 minutes about the following:

  • Pea aphids on alfalfa in northern Iowa, may be insecticide resistant.
  • Japanese beetle adults have emerged, look to them feeding on corn and soybean. Erin notes that the defoliation on younger soybeans is not 'more bad' than defoliation on older soybeans, it just looks worse because the beans are so small.
  • Outside of crop pests, Erin shares a finding of 'kissing bugs' in Nebraska. This is a vector of Chagas disease, which can be lethal. https://dhhs.ne.gov/Pages/Kissing-Bugs-and-Chagas-Disease-Parasite-Detec...
  • Matt gives Erin a FIT that involves this picture (what is the insect, listen to the podcast to find out).

  • Erin is doing field days throughout the northern part of the state and at FEEL in central Iowa. Check her twitter account for details.
  • Matt and many others are sharing their interests, research some swag at the Pollinator Fest at Reiman gardens: https://www.reimangardens.com/event/pollinator-fest-7/
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It's still dry, insects are active, and Matt is talking about pollinators

Show: 
Soybean Pest Podcast
Season: 
12
Episode: 
3
Description: 

The 4th of July weekend delayed Matt posting this podcast.

We talk about pests: corn rootworms, japanese beetles, and soybean aphdis. The dry weather is making people worried about two-spotted spider mites, so we talk a bit about that.

Matt gives shares a "Fun (?) Insect Trivia" question about the conservation reserve practice described as "Pollinator Habitat" or CP42.  Some new analysis of where CP42 is located in Iowa is the source of this question.

We talk a bit about how and where this conservation practice is placed in Iowa farm land.

For more information about CP42, visit https://www.fsa.usda.gov/Internet/FSA_File/cp42_habitat.pdf

 

Category: 

Flex, fling and lubricate, but really we talk about rootworms

Show: 
Soybean Pest Podcast
Season: 
12
Episode: 
4
Description: 

In todays episode, Erin shares her experience seeing RNAi-based techonology for rootworm management in action.  She was not impressed. Erin describes her rootworm trapping network as the adult rootworms start to emerge. If you would like to participate, contact Erin's colleague, Ashley Dean at adean@iastate.edu

We talk about other insects including soybean gall midge, leafhoppers, flea beetles, and eventually soybean aphids.

Matt offers up a Fun (?) Insect Trivia question. After listening read this for more detials: https://royalsocietypublishing.org/doi/10.1098/rspb.2021.1065

Matt is talking at the Iowa Honey Producers Association on 10 July. Check this for more details: https://www.iowahoneyproducers.org/

See you next week.

Category: 

Half a pod is better than no pod?-Prep for next weeks Fun Insect Trivia question (Now with the picture!)

Show: 
Soybean Pest Podcast
Season: 
12
Episode: 
5
Description: 

This half pod is just Matt giving a few updates, a "thank you" to the Iowa Honey Producers Association and preparation for a Fun Insect Trivia (FIT) question for next week.

Erin is out in the field today. She and I will return next week, Tuesday, to discuss what she is seeing in the field and the answer to the FIT.

In the meantime, Matt wraps up the week of 12-16 July. One big observation is the occurence of soybean aphids at really low populations. One encouraging sign is the co-occurence of insect predators and mummies. The mummies are evidence that aphids have been parasitized by wasps.  Combined, these predators and parasitoid wasps may prevent outbreaks later in the summer.

Matt gives a big thank you to the Iowa Honey Producers Association for the invite to speak at their field day last weekend. Ebert honey was the host, providing a great location to share our research on prairie strips.  The beekeepers were excited to learn more about this practice and how these patches could help improve honey bee productivity.

Finally- Note the blurry picture below.  This picture was taken by a colleague working at a central Iowa research farm. Next week, I'll ask Erin what she thinks it is and what impact, if any, it could have on crops in Iowa.

(Matt failed to add it in the original submission. Its added below.)

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Podcast part 2-Erin is crushing it (still no aphids)

Show: 
Soybean Pest Podcast
Season: 
12
Episode: 
6
Description: 

Erin's back.

ON this episode we talk soybean aphids (so few), soybean gall midge (they are active agian), redheaded flea beetle (not really a pest, but common in some parts of Iowa) and on ogoing research.

Erin shares with us a might haul of articles she just published in the Journal of Integrated Pest Management. Check this links for her work on some key pests, including one on the soybean gall midge (is it new to science? read and find out).

1.Identification and Biology of Common Caterpillars in U.S. Soybean

https://academic.oup.com/jipm/article/12/1/13/6175259

2.Soybean Gall Midge (Diptera: Cecidomyiidae), a New Species Causing Injury to Soybean in the United States 

https://academic.oup.com/jipm/article/12/1/8/6140900

3.Current Distribution and Population Persistence of Five Lepidopteran Pests in U.S. Soybean

https://academic.oup.com/jipm/article/12/1/11/6175257

4.Needs Assessment for Corn Insect Pest Management in Iowa

https://academic.oup.com/jipm/article/12/1/pmab021/6319925

 

Finally, we discuss the FIT from last week. Check out the photo and hear Erin nail it!

Read more about the insect that was the topic of this FIT here: https://beetlesinthebush.com/2013/11/29/t-g-i-flyday-soybean-nodule-fly/

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How are the insects doing while its hot and dry

Show: 
Soybean Pest Podcast
Season: 
12
Episode: 
7
Description: 

We got some rain in central Iowa , but it is still hot and dry. This is important for the pest that is the subject of today's Fun Insect Trivia (FIT). IN addition to that pest, Erin and I discuss the insect pests that are persisting into August.

Erin runs down the list of insects that are active in corn and soybean fields- rootworms, Japanese beetles, gall midges and soybean aphids.

Although rootworms are active and surprising some farmers in their abundance, Japanese beetles are appearing to be limited to field edges. Gall midges were found in western Iowa, but aphids are low to non-existent. 

Our last pest is the topic of todays FIT. Matt asks Erin a series of questions that include the pictures below, which are leaves damaged by this pest.  See if you can match Erins knowledge on this pest.

 

We also discuss the upcoming fair season- check out Erin in the beer tent on August 14-15.

We also discuss the latest edition of the Tenderloin trail. https://www.iowapork.org/popular-tenderloin-trail-2-0-version/

Matt was also interviewed about the STRIPS project, including a discussion about the impact of CP43 for pollinator conservation:

https://www.weareiowa.com/article/news/local/iowa-state-university-prairie-strips-project-farmland-benefits/524-84d4d05c-59cc-47c8-916d-16cf6c0dfd60

 

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